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Dechannelling Cylinder of Dislocations
Author(s) -
Quéré Y.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680300231
Subject(s) - burgers vector , cylinder , dislocation , radius , crystal (programming language) , opacity , enhanced data rates for gsm evolution , particle (ecology) , condensed matter physics , materials science , physics , crystallography , geometry , optics , chemistry , mathematics , telecommunications , geology , engineering , oceanography , computer security , computer science , programming language
A particle channelled in a crystal may be dechannelled when passing near a dislocation. This effect is simulated by an opaque cylinder dechannelling any particle hitting it. This cylinder is coaxial to the dislocation and has a diameter\documentclass{article}\pagestyle{empty}\begin{document}$$ \overline \lambda = \left({\frac{{b\,d\,a\,E}}{{\alpha Z_1 Z_2 e^2}}} \right)^{1/2}.$$\end{document}E is the energy of the particle (charge Z 1 e ), b the Burgers vector, d the interatomic distance along the considered channel in the crystal Z 2 , a the screening radius, and α a number equal to 12.5 and 4.5 for screw or edge dislocations, respectively.